12 July 1983 Infrared Imaging Techniques For Flaw Detection In Composite Materials
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Abstract
With the development of the new super strength lightweight composite materials, flaw and void detection in the various layers have become of major importance. Special infrared imaging techniques have been developed to show these voids. Included in these nondestructive methods are active steady state, active pulsed, and fast recording with slow playback of infrared images. Emissivity correction techniques have also been considered. Considerable time can be saved by using an imaging system since the size and shape of a defect or void is known at a glance. With video recording, documentation is achieved and further analysis is also possible without tieing up the part. Growth or changes of marginal flaws or voids can be traced during the manufacturing process, noting if they increase to the point of nonacceptance. An 8-13μ infrared scanner compatible with a video recorder and a line integrator proved most effective. Colorizing the image also made the flaw visualization easier.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R . Paulson, A. Aquino, H. Decker, T. Schapp, "Infrared Imaging Techniques For Flaw Detection In Composite Materials", Proc. SPIE 0366, Modern Utilization of infrared Technology VIII, (12 July 1983); doi: 10.1117/12.934236; https://doi.org/10.1117/12.934236
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